It is easy to define your beauty confidence.
Look at the mirror and try to answer easy questions. Do
I like what I see? Are there three things I like in my appearance? Your positive reply to both questions means that everything is ok.

Stop talking about that

Low self-confidence leads you to the cases when you start talking about your shortcuts. And you used to do it so often that your friends begin seeing your disadvantages only and forget about your advantages. Is it something that you would like to achieve with your words? Does it make you feel comfortable? Let's think why you are telling false things about your appearance and make other people believe that you ugly.

First of all, everything you are telling about is created by your thoughts. Anyway, even if a teenager is used to speak about his/her shortcuts, sometimes he/she does not mean that. Simply it is the way to attract attention. But what if you are truly sure that you are ugly? The first reason for that is physical. Your hormones make grow in some parts of your body which seems to be unusual or your skin look oily. In addition, your mood changes suddenly as well. Sometimes you feel happy, sometimes you are depressed and upset about your appearance. It is just worthy waiting till it is over. Another reason is in your family. In some families mothers are too worried about their appearance. They used to repeat that they are fat, unattractive and so on. As a result, you unconsciously could repeat these statements word-in-word. You can not even imagine how powerful the family scenarios are. If you could love your body and value your talents, the things would be much easier to you.